Device for cementing the walls of wells



- Dec. 7 ,11926.

L. B. BURTON- DEVICE FOR CEMENTING THE WALLS OF WELLS Filed April 15, 1926 2 Sheets-Sheet i I Attorney w r a L Dec. 7-, 1926, 1,609,534

- L. B. BURTON DEVICE FOR CEMENTI NG THE WALLS OF WELLS Filed April 15, 1926 2 Sheets-Sheet 2 [aw/nor I By Patented Dec. "7, 1926. v i

PATENT OFFICE.

LOUIS B. BURTON, OF TULSA, OKLAHOMA, AS SIGNOR OF ONE-SIXTEENTH TO CARL C.

GRAY, OF TULSA, OKLAHOMA. I

DEVICE FOR CEKENTING TEE WALLS OF WELLS.

Application filed April 15, 1926. Serial No. 102,226.

The present invention relates to a novel device for use in conjunction with 011 well drilling, and has for its principal object to provide means for cementing the walls or the well being formed for the purpose of preventing the caving in of the walls of the well should water be accidentally encountered during the drilling operations.

Another important object of the invention is to provide a device of the above mentioned character which includes a casing which is adapted to remain in the well after the device has been used and the outer casing and the parts connected thereto are removed from the well.

Another important object of the invention is to provide a device of the above mentioned character wherein a removable closure is provided for the lower end of the casing, said closure being adapted to be disengaged from the casing to permit the concrete and sand contained therein to be discharged therefrom when the casing is raised out of the well, the water which is encountered during the drilla ing operation readily mixing with the concreltle and sand to form a cement wall in the we A further object is to rovide a device of the above mentioned c aracter which is simple in construction, inexpensive, strong and durable and further well adapted to the purpose forwhich'it is designed.

Other objects and advantages of the'invention will become apparent from the following description taken in connection with the accompanying drawings.

In the accompanying drawings forming a part of this application and in .which like numerals designate like parts throughout the several views:

Figure 1 is a vertical sectional view through the device embodying my invention. Figure 2 is a sectional vlew taken approximately on line 22 of Figure 1 looking in the direction of the arrows.-

Figure 3 is a similar section taken approximately on line 33 .of Figure l-looking in the direction of the arrows.

,head.

Figure 7 is a top plan view of the block member, and

Figure 8- 1s a bottom plan view of the locking member.

In the drawings wherein for the purpose of illustration is shown the preferred embodiment of my invention, the numeral 1 designates the elongated cylindrical outer casing, the respective ends of which are externally threaded and on which are support- 05 ed the collars or sleeves 2 and 3 respectively. These sleeves are internally threaded and the purpose thereof will be hereinafter H1010 fully described. An externally threaded ring 4 is threaded into the lower end of the 7 sleeve 3 and the upper edge of this ring abuts the lower edge of the outer casing 1. Extending inwardly from the lower portion of this ring and arranged atspaced intervalsare the lugs 5, the purpose of which will be hereinafter more fully described.

Arranged within the outer casing 1 is the inner cylindrical casing 6, the same being spaced from the inner wall of the outer casing to provide a compartment in which is adapted to be placed concrete indicated at 7. The lower end of the inner cylindrical casing 6 is supported on the top of the ring like member 8, an upstanding flange 9 being r formed on the upper face of the ring and extendin around the. lower portion of the inner casing 6 in the manner clearly shown in Figure 1. This ring like member 8 is disposed downwardly between the inner edges ofthe spaced lugs 5 formed on the ring 4 9.0 and adapted for cooperation with these lugs are similar lugs 10 which extend laterally from the upper portion of the ring like member 8 at spaced intervals in the manner as clearly shown in Fi re 4.

The lugs 10 norma y rest on the upper till faces of the lugs 5 whereby the ring 8 is held in a locked position within the lower portion of the outer casing 1.

Arcuate shaped strips 10 are supported on the upper faces of the lugs 10 in the manner shown in Figure 4. The outer edges of these strips engage the inner wall of the outer casing 1, the inner edges fitting against the flange 9.

The lower portion of the ring 8 is provided with the annular flange 11 and as is clearly shown in Figure 1, the upper face of this flange is spaced from the bottom face of the lug 5 formed on the lower portion of the ring 1 as well as being spaced from the lower edge of the sleeve 3 which is carried by the lower end of the outer casing 1. A series of downwardly projecting spurs such as are shown at 12 are formed on the bottom face of the flange 1.1, and this construction is more clearly illustrated in Figure 5 of the drawing. The lower portion of the ring like member 8 is provided with the beveled inner face 13, and adapted to be secured to the bottom of the ring like member to provide a closure for the bottom of the inner casing 6 is the wood disc 14, the securing means therefor being illustrated at 15.

The inner cylindrical casing 6 is adapted to be filled with sand as illustrated at 16, and as is clearly shown in Figure 1, the upper end of the cylindrical inner casing 16 terminates at a point below the top of the outer cylindrical casing 1. An outwardly flared collar 17 is secured in the upper end of the inner cylindrical casing G, and a conical shaped hood 18 is disposed over the upper end of the inner cylindrical casing for preventing the concrete 7 in the outer casing 1 from entering the sand contained in the inner casing (i.

A head 19 is threaded into the upper portion of the upper sleeve 2 and the same has its bottom face engaging the upper edge of the outer casing 1. This head 19 is provided with a central substantially square opening 20 in which is fitted the square shaped base portion 21 of the block designated generally by the numeral 22. The upper portion of this block is cylindrical as indicated at 23, and for the purpose of securing the block rigidly in the head 19, I provide a locking ring 24 which is dis osed over the cylindrical portion 23 of the lock 22 and is secured to the upper face of the head 19 by the securing bolt 25. A series of radially extending bolts 26 are threaded through suitable openings provided therefor in the locking ring 24 and the inner ends of these bolts are received in the threaded openings 27 provided therefor in the cylindrical portion 23 of the block 22 in the manner clearly shown in Figure 2.

The block 22 is provided with the vertical central bore and the double worm is formed in the bore of the block as indicated at 28.

Coacting with the worm 28 is the threaded stem 29, the lower end being enlarged and weighted. The upper end of the stem is reduced as illustrated at 30, and adapted for slidable movement thereon is the cross head 31. This cross head is substantially rectangular in design as clearly shown in Figure (S. A bushing such as is shown at 32 is associated with the central opening 33 formed in the cross head 31 and through which the reduced portion 31 of the stem 29 is adapted to extend.

Suitable trunnions 35 project from the respective ends of the cross head 31 and provide a means for supporting the bail 34. The outer ends of the trunnions are reduced and externally threaded as indicatediat 36 and suitable securing nuts such as are shown at 37 are threaded on the threaded portion 36 for preventing the accidental displacement of the bail from the trunnions.

Coacting with the cross head 31 is the locking ring 38, the same being secured on the upper end of the reduced portion 30 of the stem 29 by means of the transversely extending bolt 39. A series of pins or projections 40 are formed on the bottom face of the locking ring 38 and the same are adapted to be received in suitable recesses 41 provided therefor in the upper face of the cross head 31 in the manner clearly shown in Figure 1. The purpose of this particular construction will also be hereinafter more fully described.

The operation of my improved device may be briefly stated as follows: Normally the parts are arranged as shown in Figure 1 of the drawings, and the device is suspended from one end of a suitable actuating cable which is secured to the bail 3.4. The device is lowered into the well by means of the cable and reel (not shown) and as the device is being lowered all the weight is supported by the cross head 31. \Vhen the device reaches the bottom of the well, and slack is given to the actuating cable, the cross head 31 will slide downwardly onthe reduced portion of the stem 29, in the mean time, the stem 29 will travel downwardly through the block 22 through the medium of the work gearing heretofore described.

Furthermore, when the device reaches the bottom of the well, the spurs 12 will enter the earth and the weight of the outer casing 1 with the concrete contained therein will cause the same to move downwardly so that the lower end thereof will rest on the upper face of the annular flange 11 formed on the lower portion of the ring like closure member 8. When the actuating cable is again placed under tension, and an upward pull is exerted thereon, it will be seen that the cross head 31 will move upwardly on the stem so that the projecting pins 40 formed on ithe bottom of the locking ring 38"wi1l enter the recesses 41in the upper face of the cross head 31 thus preventing the rotation of the stem and consequently the casing 1 must rotate durin the upward. movement thereof in the we and as a result of the rotation of the casing, the lugs 5 will be brou htvout of engagement with the lugs so t at the outer casing is free to be pulled upwardly from the well and at the same time the concre'tewill be discharged into the bottom of the well. This will cause the inner casing 6 to remain within the well and after the outer sumed without any "the samefrom the ln casing and the parts connected thereto have been entirely removed from'the well a bit and drill stem are lowered into thewell and are caused to-penetrate the hood 18 so as to extend downwardly through the inner casing 6 and to further penetrate the cover 14 provided for the lower end of the. inner casing'whereby. the sand 16 will be discharged from the inner casin thereby causing the concrete and sand to left in the well and when the same becomes commingled with the water found in the well, and the same is left to harden for 'a suflicient length of. time, it will be seen that a reinforcement isprovided for the wall of the well so that the caving in of the wall will be revented, and will thereby enable the dril in operations to be reanger of the well collapsing. Q v

The arcuate shaped strips 10 normally form a closure for the bottom ofthe outer casing to prevent the concrete beingdischarged from the bottom of the casing. It is of course understoodthat 'when the lugs 5 are moved out of engagement with the lugs 10, and

when the casing 1 is pulled upwardly, the 'lugs 5 will trip the strips 10' and disengage 10 whereby the concrete'will be free to-flow from'the bottom of the casing.

A device of the above mentioned character will at all times be positive and etficient in' carryin out the purposes for which it is ,designe ,and the sim licit in which the same is-constructed ena lest e several arts" to be readily and .easilyassembled or isassembled.

While I have shat the preferred embodi- ,rnent of the invention, it is to be understood that mmor changes in the size, shape and"ar-,'

rangementof parts may be resorted to with: out departing from the spirit of the invention and the scope of the appended claims.

.- Having thus described the invention, what ters Patent is I claim as new and desire to secure by Let- A device of the class described comprisin an outer casing, an inner casing space from the inner wall of the outer casing to provide a concrete receiving compartment, the inner casing being adapted to be filled with sand, means for normally locking the inner casing in the lower por tion of the outer casing, and, additional means for effecting the unlocking of said first mentioned means whereby the outer casing may be raised upwardly free of the inner cas ng.

2. A deviceof the class described comprising an outer casing, an inner casing, means associated with the lower ends of the easings for holding the same in interlocking engagement, and means associated with the upper end of the outer casing for efiecting the rotation thereof whereby said outer casing is unlocked from the lower portion of.

the inner casing-to facilitate the upward raising movement ofthe outer casing independently of'the inner casing.

3. A device-of the class described comprising an outer casing and inner casing, coacting lugs associated with the lower ends of the casing for holding the same in interlock ing engagement, and means associated with the upper end of the outer casing to facilitate the rotation thereof whereby the lugs are moved out of engagement with each other to ,permit the upward movement of the outer casing independently of the inner casmg. 7

4. A device of the class described, comprising an outer casing, an inner casing, cooperating means associated with the ower ends thereof for normally holding the same in interlocking engagement, an additional means associated with the upper end of the to facilitate the rotation thereof t ,e-outer casing may beraised outer casin whereby mentioned means com rising a head supported in the upper on of the outer casing,

head andabout which said head is adapted to rotate,-and meansfor preventingthe rota tion of the stem.

- a stemextending downwardly through said 1 6. A device of the'class described, com;

prising an outer casing, an inner casing, cooperatlng means associated with the lower ends thereof for ngrmally holding the same in interlocking engagement, an additionaL means associated with the upper end of the outer casing to facilitate the rotation thereof whereby the outer casing may be 11h :independentlyof the inner casing, said last raised independentl of the inner casing, said last mentione means comprising a head supported in the upper end of the outer casing, a stem extending downwardly through said head and about which said head is adapted to rotate, means for preventing the rotation of the stem, said last mentioned means comprising a cross head slidable on the upper end of the stem, a locking ring secured on the upper end of the 10 stem, and cooperating means associated with the bottom of said locking ring and the upper face of the cross head for holding the same in interlocked engagement.

In testimony whereof I atfix my signa- 15 ture.

LOUIS B. BURTON. 

